Product Information from Natrol
Nitric Oxide Precursor for Vascular Support†
Promotes Immune Function†
Supports Muscle Metabolism†
The amino acid L-Arginine has several major functions in the body, including as a precursor of nitric oxide (NO). This chemical messenger plays a vital role in vasodilatation, relaxation of smooth muscle cells within arterial blood vessels. Dietary L-Arginine provides the nitrogen our bodies use to produce NO. Because of L-Arginine’s potential role in vasodilatation, it may support healthy blood vessels.†Emerging evidence suggests a role of L-Arginine in immune function. It is well known that the body uses more L-Arginine when it is under stress or injured. Further, L-Arginine is also used by the body to produce creatine which supports muscle protein synthesis.†
Take 1 tablet, one time daily, with a meal.
Supplement Facts
Serving Size: 1 Tablet
Amount Per Serving
L-Arginine 1,000 mg *
* Daily Value Not Established
Other Ingredients Cellulose, Hydroxypropyl Cellulose, Stearic Acid, Silica, Cellulose Gum, Methylcellulose, Magnesium Stearate, Glycerin.
NO Yeast, Wheat, Corn, Milk, Egg, Soy, Glutens, Artificial Colors or Flavors, Added Sugar, Starch or Preservatives
100% Vegetarian
Natrol is driven to become the most desired brand of nutritional products by Nourishing the Potential of Mind and Body (SM). Natrol, Inc. has a portfolio of health and wellness brands representing quality nutritional supplements, functional herbal teas, and sports nutrition products. Established in 1980, Natrol’s portfolio of brands includes: Natrol®, MRI, Prolab®, BioSil™, Laci Le Beau®, Promensil®, Trinovin®, Nu Hair® and Shen Min®. The company also manufactures supplements for its own brands and on behalf of third parties.
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